Custom widgets not getting proper classes

Widgets that rely on custom classes are currently breaking. Case in point is the “Simple Social Icons” plugin. This plugin relies on the widget being wrapped in a div with the class “.simple-social-icons”. With this theme, that class is not applied to the wrapping div.

The fix is easy. Just change the “before_widget” line in functions.php to: 'before_widget' => '<div id="%1$s" class="widget %2$s">'

The important change is the addition of %2$s in class.

Diff for quick patching here:
https://pastebin.com/Q4P9nFBp